一夜だけの秘密、永遠の恋のはじまり？

Haruka spends a night with a stranger in anger at her earnest boyfriend's cheating. Later, the stranger turns out to be Han Ji-ho, the new Director at her workplace. Even worse, Haruka and Ji-ho become entangled with a conglomerate family after finding out about premarital pregnancy and face tons of obstacles to tackle. Will they safely reach a happy ending?